X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Femail.c;h=b4a5e8114ac7b613b1a4903c877cb8f7a54000e5;hb=ea341582f90a9a7ee4b5525551edc2fdb4ec1226;hp=849b7f932a98f4faf147ae4fb7592ebf4309c166;hpb=2079ee1517e34de372f58e7e2267ad5c71a8a41f;p=collectd.git

diff --git a/src/email.c b/src/email.c
index 849b7f93..b4a5e811 100644
--- a/src/email.c
+++ b/src/email.c
@@ -403,15 +403,21 @@ static void *open_connection(void __attribute__((unused)) * arg) {
   {
     struct group sg;
     struct group *grp;
-    char grbuf[2048];
     int status;
 
+    long int grbuf_size = sysconf(_SC_GETGR_R_SIZE_MAX);
+    if (grbuf_size <= 0)
+      grbuf_size = sysconf(_SC_PAGESIZE);
+    if (grbuf_size <= 0)
+      grbuf_size = 4096;
+    char grbuf[grbuf_size];
+
     grp = NULL;
     status = getgrnam_r(group, &sg, grbuf, sizeof(grbuf), &grp);
     if (status != 0) {
       char errbuf[1024];
       log_warn("getgrnam_r (%s) failed: %s", group,
-               sstrerror(errno, errbuf, sizeof(errbuf)));
+               sstrerror(status, errbuf, sizeof(errbuf)));
     } else if (grp == NULL) {
       log_warn("No such group: `%s'", group);
     } else {